glsa-200907-12.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200907-12">
  <title>ISC DHCP: dhcpclient Remote execution of arbitrary code</title>
  <synopsis>
    A buffer overflow in dhclient as included in the ISC DHCP implementation
    allows for the remote execution of arbitrary code with root privileges.
  </synopsis>
  <product type="ebuild">dhcp</product>
  <announced>2009-07-14</announced>
  <revised count="01">2009-07-14</revised>
  <bug>277729</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/dhcp" auto="yes" arch="*">
      <unaffected range="ge">3.1.1-r1</unaffected>
      <vulnerable range="lt">3.1.1-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ISC DHCP is the reference implementation of the Dynamic Host
    Configuration Protocol as specified in RFC 2131.
    </p>
  </background>
  <description>
    <p>
    The Mandriva Linux Engineering Team has reported a stack-based buffer
    overflow in the subnet-mask handling of dhclient.
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker might set up a rogue DHCP server in a victim's local
    network, possibly leading to the execution of arbitrary code with root
    privileges.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All ISC DHCP users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-misc/dhcp-3.1.1-r1"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692">CVE-2009-0692</uri>
  </references>
  <metadata tag="requester" timestamp="2009-07-12T14:21:43Z">
    a3li
  </metadata>
  <metadata tag="submitter" timestamp="2009-07-12T14:58:48Z">
    a3li
  </metadata>
  <metadata tag="bugReady" timestamp="2009-07-14T17:38:51Z">
    a3li
  </metadata>
</glsa>